Crime Dot Com, his book on cybercrime for Reaktion Books, will be published on August 10, 2020.

He has written and presented two major podcast series for Audible. Artificial Intelligence: Friend or Foe? reveals the origins of AI, and shows how the technology is seeping into everyday life. The Dark Web exposes the shadow internet created by the US military and now home to hackers, crooks and freedom fighters.

Geoff’s own podcast series Cybercrime Investigations takes you inside the world of an investigative journalist, detailing the twists and turns as the story unfolds.

An experienced public speaker, he has given keynote talks at some of the UK’s largest tech events, in addition to hosting conferences and chairing panels at venues ranging from London’s Chatham House think-tank to the Latitude music festival.

He is also the co-creator of The Secret Life of Your Mobile Phone, a live, interactive phone hacking stage performance which shows how the global technology industry is harvesting the data leaking from your handset. The show was a sell–out hit at the Edinburgh Fringe Festival 2017, and has been performed at music festivals, political conferences and for corporate clients.

For Channel 4 News he created the Data Baby project, a unique experiment which used a fictional online identity to expose how our personal data is being used – and abused – online.